Testing & Quality Calculators

Browser-side measurement and quality arithmetic without engineering acceptance criteria.

Convert common millimetre, micrometre and inch dimensions.

Compare a measured value with a user-entered reference value.

Calculate the percentage passing without rework.

Convert defective-unit counts to parts per million.

Calculate the range and midpoint of repeated readings.

Calculate mean and spread from repeated readings without judging acceptability.

Calculate Cp and Cpk from user-entered limits, mean and standard deviation.

Calculate observed change between two calibration results.

Compare accepted quantity with inspected quantity.

Calculate reworked units as a percentage of production.